Modern Warfare 4 Is Live — Infinity Ward Opened the Doors Early

Call of Duty: Modern Warfare 4 is live — and it did not wait for its own launch time. Infinity Ward opened the game early, announcing at 12:30 a.m. UTC on Friday, October 23 that MW4 was live worldwide, with the official Call of Duty account confirming the global launch minutes later. The staggered rollout that started a week ago is now complete: the campaign, the full multiplayer suite and DMZ are open to everyone who owns the game.

The launch was built as a ladder. The campaign opened first, on Friday, October 16, for anyone who pre-ordered a digital copy. DMZ, the returning extraction mode, followed on Tuesday, October 20. Multiplayer was always the final rung, scheduled to unlock at midnight local time on October 23 — 9:00 p.m. PT Thursday on the West Coast. Instead, Infinity Ward flipped the switch ahead of schedule, and the full game is simply on, everywhere, right now.

Multiplayer arrives loaded. There are 20 maps on day one: 12 core 6v6 maps, three large-scale 32v32 Ground War maps, four 2v2 Gunfight maps, and Kill Block — a modular battleground that reconfigures itself between rounds, with more than 500 possible configurations. The playlist runs 12 modes, three of them new: Inflation, where carrying more cash makes you a bigger target; Hijack, a one-spike attack-and-defend variant; and Collateral, a pistol-and-buy-phase take on Search and Destroy. There are 33 weapons and 33 operators at launch, with a full progression run through Level 55.

Under the hood, two systems define how this one plays. The Ballistic Authority gunplay model runs the shooting, and Server Culling — the anti-cheat system that strips the information wallhacks feed on by keeping other players' data occluded until they are legitimately visible — is live on every launch map. We broke down how Server Culling works, and everything inside DMZ, earlier this month: https://www.watchpreviously.com/news/modern-warfare-4-server-culling-dmz-october-6-2026/

DMZ is fully open as of today. The extraction mode is set in the Hajin Exclusion Zone and built around the Forward Operating Base, with Story Missions, Dynamic Operations and Free Roam layered over a 1-to-70 progression climb. If you dropped in during early access, nothing resets: your progression carries straight into launch. DMZ is the piece of this package with no real equivalent elsewhere in the series right now — it is a full mode, not a playlist.

Then there is the campaign, which has quietly been the story of launch week. It runs 16 missions, roughly eight to ten hours: North Korea launches a full-scale invasion of South Korea, and you play Private Park Hyun Jun on the front line of it, while a fugitive Captain Price — on the run after assassinating General Shepherd, with Task Force 141 disbanded — fights an off-book shadow war that runs through New York, Paris and Mumbai. Mads Mikkelsen plays the villain, a Russian defense minister called the Archer. Players who got in early have rendered their verdict already: 92 percent positive on Steam as of last weekend, and at one point more than 108,000 people were in the game on Steam concurrently with only the single-player campaign open. Our own review scored the campaign 9 out of 10 — "insanely good" — and that score belongs to the campaign alone: multiplayer and DMZ get their own assessments, added to that review only after sufficient firsthand testing: https://www.watchpreviously.com/games/call-of-duty-modern-warfare-4/review/

The platform list matters this year. MW4 is on PlayStation 5, Xbox Series X|S and PC — Battle.net, Steam and the Xbox app, with Xbox Play Anywhere — and on Nintendo Switch 2, which makes this the first Call of Duty on a Nintendo console since Ghosts in 2013. There are no PS4 or Xbox One versions. And the question every Xbox player brings to a launch day gets a plain answer: no, it is not on Game Pass. Not at launch, anyway — the subscription arrival is reported for late 2027. To play today, you buy it: $69.99 for the Standard edition, $99.99 for the Vault edition, with a $30 upgrade path between them.

PC players, one checklist before you queue. The install runs about 120 GB, and online play requires TPM 2.0 and Secure Boot switched on — RICOCHET's Secure Attestation gate is enforced, and it was the main friction point in the early Steam reviews, alongside complaints about the Call of Duty HQ launcher itself. Five minutes in your BIOS settings before launch night beats finding out at the menu screen.

Two honest absences round out the picture. There is no Zombies mode at launch, and the rebuilt Warzone integration that ships inside the MW4 package is not playable today — Activision has it arriving with Season 1. The first post-launch drop is already dated: the Shipment map returns on October 27.

So where do you start? If you pre-ordered, your campaign progress and DMZ levels are already waiting for you. If you are buying in tonight, the order writes itself: the campaign is the acclaimed piece and the reason this launch has momentum; Kill Block and Gunfight are the fastest way to learn how the new multiplayer actually moves; and DMZ is the long session, the one built to still be pulling you back in a month. Call of Duty has had rough launches and quiet launches. This one opened early, opened complete, and opened on a Nintendo console for the first time in thirteen years. That is a statement, and today everybody gets to test it.